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當我服務我的應用程序(ng服務)時,ConfigurationService.coucou()返回期望值。 但是,如果我在AppModule的構造函數中使用--prod(ng serve --prod),window ['config'] ['coucou'],我得到期望值,但valueConfigurationService.coucou()返回一個空字符串。InjectionToken空prod
有什麼想法?
的AppModule:
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
import { ConfigurationService, COUCOU } from './configuration.service';
@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
FormsModule,
HttpModule
],
providers: [ConfigurationService,{ provide: COUCOU, useValue: window['config']['coucou'] }],
bootstrap: [AppComponent]
})
export class AppModule { }
configuration.service:
import { Injectable, Inject, InjectionToken } from '@angular/core';
export const COUCOU = new InjectionToken<string>('coucou');
@Injectable()
export class ConfigurationService {
private _coucou: string;
get coucou(): string {
return this._coucou;
}
constructor(@Inject(COUCOU) coucou: string) {
console.log('ConfigurationService.coucou : ' + coucou);
this._coucou = coucou ? coucou : "";
}
}